Improvement in graphoscopes



" UNITED STATES PATENT OFFICE.

HILARIUS PATTBERG, OF JERSEYGITY HEIGHTS, NEW JERSEY.

I IMPROVEMENT IN GRAPHOSCOPES.

Specification forming par-tof Letters Patent No. 214,789, dated April 29, 1879; application filed January 25, 1879.

To all whom it may concern:

Be it known that I, HILARIUS PATTBERG, of Jersey City Heights, in the county of Hudson and State of New Jersey, have invented a new and Improved Graphoscope, of which the following is a specification.

Figure 1 is a side elevation, partly in section, of my improved graphoscope. Fig. 2 is a detail vertical section through the joint between the post, picture-holder, and lens-holdin g arm; Fig. 3, a detail vertical section through the joint between the lens-holding arm and the vertically-adjustable lens-holder. Fig. 41- is a face view, and Fig. 5 a back view, of the picture-holder. Fig. 6 is a detail side view of one of the tubular friction-pieces used in the joints.

Similar letters of reference indicate corresponding parts in all the figures.

This invention relates to a new construction of graphoscope, some features of which are also applicable to stereoscopes.

The invention consists, principally, in the new combination of horizontally-sliding lensholder with the picture-holder, which cannot be slid horizontally; also, in details of improvement as regards the character of the joints employed, and in the construction of the picture-holder, all as hereinafter more fully described.

In the accompanying drawings, the letterA represents the post; B, the swivel on top of the post 5 O, the picture-holding tube or rod, pivoted at a to the swivel B. D is the body of the picture-holder, secured to the outer end of the tube or rod 0. E is the sliding lensholder arm, made to slide in or on the tube or rod 0. A tubular T-extension, b, at the outer end of the arm E serves to receive the vertically-adj ustable rod F, which carries the lens G.

The character of the connection between the swivel B and post A is clearly shown in Fig. 2. The upper part of the post A is made tubular, to receive a slotted friction-tube, d, of the kind shown in Fig. 6. The friction tube has its upper portion screw-threaded, as shown, and is screwed into the post A until a collar e, at the upper end of the friction-tube bears upon the upper end of the post. The swivelpin B is fitted through the friction-tube d, and rests upon it with a shoulder, f. A screw at outer end of this tube is closed, and receives on a threaded projecting nipple, h, the pictureholder D. A nut, i, secures the picture-holder in place on the nipple h. A projecting pin, j, on the picture-holder, entering a corresponding cavity on the carryingarm G, or vice versa, prevents the picture-holder from turning on the arm 0.

The pictureholder D is a grooved frame, open on top, and provided at its face with projecting hooks K K. In these hooks may be laid a large picture. Smaller pictures may be inserted in the grooved frame direct, their backs resting against a wire-netting, m, or filling, which is applied to the back of the frame D. But for properly displaying smaller pictures I insert a pouch, H, of leather or other material, within the grooved frame. The pouch is made to fit the frame, is open on top to receive the picture I, and has a large openin gin front, through which the picture is displayed. By means of this pouch smaller pictures can be properly secured in the frame and exhibited to advantage.

Into the open inner end of the tube 0 is inserted the tube or rod E, which constitutes the lens-holding arm. It is, by a slotted frictiontube, n, that is screwed into the tube 0, clamped, so as not to slide too freely. A pin or screw, 0, Fig. 2, is fitted through the tube 0 into a groove or slot of the rod or tube E, and prevents the latter from turning within the tube G, and also prevents the accidental separation of the parts 0 E.

Instead of sliding the tube or rod E within the tube 0, it may be made to embrace. the tube or rod 0, and to slide thereon, with otherwise substantially the same effect.

- The outer end of the arm E carries an up right short tube, b, through which the upright rod or tube F, carrying the lens G, is inserted. The tube F is also fitted through a slotted frietiontubap, which is screwed into the tube 7), and prevents the tube F from sliding too freely. A pin or screw, 1", extending through the tube 1) intoa groove or slot of the rod or tube F, prevents the latter from turning within the tube 1).

Instead ofthefriction-tubes herein described, suitable rubber packings or other well-known friction-pieces may be used. The lens can thus be adjusted to any desired height, and to any desired distance from the picture; but the parallelism of its face to that of the picture cannot be varied.

I claim- 1. The combination of the picture-holder H, the post A, and intermediate vertical swivel, B, with the horizontally sliding lens holder, the picture-holder being pivoted to said vertical swivel, substantially as herein shown and described.

2. The combination of the hollow post A, swivel-pin B, friction -tube (1, having collar 0, and nut g, all arranged substantially as herein shown and described.

3. The picture-holding frame D, made with grooves and provided with projecting hooks K K, substantially as herein shown and described.

4. The combination of a vertically-adj ustable lens-holder, horizontally-adjustable lens-holdin g arm E, and pivoted picture-holding arm, substantially as herein shown and described.

. The foregoing description of my invention signed by me this 17th day of January, 1879.

HILARIUS PATTBERG. Witnesses:

T. B. MOSHER, F. v. BRIESEN. 

